restore ONLY bbm contacts from backup ?

Hello, I wiped my blackberry trying to sort out a major issue with duplicates in my address book on my curve2 8530. Everything is sorted out with that now, however, I forgot to backup my bbm contacts within bbm. I do have a full backup but do not see an option to restore ONLY bbm contacts from it. I do not want to do a full restore and have a messed up address book again. Does anyone know what I can do to get my contacts back?